Finding the Fourth Proportional to 3,987,547,318.91, 5,503,128,986.63 and 2,270,969,058.28
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Solution
The fourth proportional to 3,987,547,318.91, 5,503,128,986.63 and 2,270,969,058.28 is: 3,134,115,949.70
Step by Step Solution
- Step 1: Write the proportion equation
3,987,547,318.91 : 5,503,128,986.63 = 2,270,969,058.28 : x - Step 2: Convert to fraction form
3,987,547,318.91/5,503,128,986.63 = 2,270,969,058.28/x - Step 3: Cross multiply
3,987,547,318.91x = 5,503,128,986.63 × 2,270,969,058.28 - Step 4: Simplify right side
3,987,547,318.91x = 12,497,435,652,360,503,296 - Step 5: Solve for x
x = 12,497,435,652,360,503,296/3,987,547,318.91 - Step 6: Final answer
x = 3,134,115,949.70
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.